GB News called Prince Louis's Trooping the Colour appearance a "subtle transition," with the royal essentially debuting a "new look" by perfectly twinning with Prince George. "Prince Louis marked a significant departure from previous years," the outlet reported, while also stating that the royal's "choice breaks with a longstanding custom."

Prince George, Princess Charlotte and Prince Louis made an appearance on the Buckingham Palace balcony for Trooping the Colour. See the best photos of the royal siblings.

As the royal family stood on the Buckingham Palace balcony for Trooping the Colour, Kate Middleton was caught on camera guiding her youngest son, Prince Louis. Before the national anthem began, Kate gave Louis a gentle but firm instruction.